Metal-Insulator Transition and Size Dependent Electrical Percolation in Onion-Like Carbon/Polydimethylsiloxane Composites Научная публикация
| Журнал |
Journal of Applied Physics
ISSN: 0021-8979 , E-ISSN: 1089-7550 |
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| Вых. Данные | Год: 2014, Том: 115, Номер: 21, Страницы: 213702-1-213702-9 Страниц : 9 DOI: 10.1063/1.4880995 | ||||||||
| Ключевые слова | Electron tunneling; Percolation (computer storage); Percolation (fluids); Semiconductor insulator boundaries; Silicones; Solvents | ||||||||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | European Commission |
Реферат:
Dielectric/electric properties of onion-like carbon (OLC)/polydimethylsiloxane composites were investigated over very wide frequency (20 Hz–3 THz) and temperature (26–500 K) ranges. The percolation threshold in these composites strongly dependents on the OLC aggregate sizes and was lowest for the composites with the smallest OLC aggregate sizes (∼40 nm). Interestingly, the transition into the insulator state of the composites occurred at higher temperatures. The transition temperature increases with OLC aggregate concentration. Above the percolation threshold, the electrical conductivity in the composites occurs mainly due to electron tunneling between OLC clusters and quasi-one-dimensional hopping inside the clusters. The hopping almost vanishes at frequencies above 100 GHz where the phonon contribution dominates.
Библиографическая ссылка:
Macutkevic J.
, Kranauskaite I.
, Banys J.
, Moseenkov S.
, Kuznetsov V.
, Shenderova O.
Metal-Insulator Transition and Size Dependent Electrical Percolation in Onion-Like Carbon/Polydimethylsiloxane Composites
Journal of Applied Physics. 2014. V.115. N21. P.213702-1-213702-9. DOI: 10.1063/1.4880995 WOS Scopus РИНЦ CAPlusCA OpenAlex
Metal-Insulator Transition and Size Dependent Electrical Percolation in Onion-Like Carbon/Polydimethylsiloxane Composites
Journal of Applied Physics. 2014. V.115. N21. P.213702-1-213702-9. DOI: 10.1063/1.4880995 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 25 мар. 2014 г. |
| Принята к публикации: | 20 мая 2014 г. |
| Опубликована online: | 2 июн. 2014 г. |
| Опубликована в печати: | 7 июн. 2014 г. |
Идентификаторы БД:
| Web of science: | WOS:000337161600028 |
| Scopus: | 2-s2.0-84902590076 |
| РИНЦ: | 24059998 |
| Chemical Abstracts: | 2013:1705610 |
| Chemical Abstracts (print): | 159:736548 |
| OpenAlex: | W1991577504 |